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Forsterite
Forsterite

Gahnite
Gahnite



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Forsterite
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Gahnite

Forsterite Vs Gahnite

Astrology

Origin

Southern and central Africa
Australia

Color

Colorless, Green, Yellow, White
Blue, Green, Greenish, Black

Streak

White
Grey, gray

For which Rashi?

-
-

Planet

-
-

Element of Planets

-
-

Energy

-
-

How to Wear?

Finger

-

Ring Metal

-
-

Deities

-
-

Not to wear with

-
-

Powers

-
-

Birthstone

Planetary

-
-

Talisman

-
-

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.23-3.264.00-4.62
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal, Uneven

Cleavage

Perfect on {010} imperfect on {100}
Indistinct parting on [111]

Mohs Hardness

6.5-77.5-8
2 10
👆🏻

Chemical Composition

Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

colorless.
-

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.635-1.6711.790-1.818
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
cubic

Birefringence

0.033-0.042-9999
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Benefits

Physical

Neurological

-
Enhances mental clarity and focus

Cardiovascular

-
-

Respiratory

Good
Aids in digestion and soothes the stomach

Reproductive

Supports healthy digestion
-

Digestive

-
-

Psychology

Peace
Protection

Healing

Physical healing
Emotional healing

Qualities Associated

Peace
Harmony

Forsterite Vs Gahnite Fracture

Fracture is an important parameter when you compare Forsterite and Gahnite Physical Properties. It is necessary to understand the significance of these properties, before you compare Forsterite Vs Gahnite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Forsterite is Conchoidal. Gahnite fracture is Conchoidal and Uneven.

Forsterite Vs Gahnite Luster

A primary knowledge about Forsterite vs Gahnite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Forsterite exhibits Vitreous luster. Gahnite, on other hand, exhibits Vitreous luster.